Tabulating machine



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July 10, 1934. c. D. LAKE ET AL TABAULATING MACHINE Filed April 19, 1932 18 Sheets-Sheet 14 3 INVENToRs July 10, 1934 c. D. LAKE ET AL TAEULATING MACHINE 18 Sheets-Sileet l5 Filed April 19, 1932 lNvENToRs Ml.

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INVENTORS 1 6 F Y; ATTORNEY Patented July 1G, i934 TABEJLATHNG MAC @lair lill. limite, ingliamten, George' it". Daly,

Joon ility, and Francis E. Hamilton, Endicott, New York, assignors, by mesme assignments, to Enternational Business. Machines lorporation, New York, N. SY., a corporation ci New York application April 11.3, E932, Serial No. 6%20 Claims.

This invention concerns accounting machines and more particularly machines of the record n controlled tabulator type shown and described in the patent to George F. Daly and Ralph E. Page, No. 1,896,540, filed March 30, 1923 and issued February 7, 1933.

The broad object of the invention is to provide a tabulating machine of improved selectivity of operation and of increased utility together with simplification and improvement of the wiring and switching arrangements and improvement of the mechanical structure with a View to imparting additional operating features as well as improvement in and increased eiciency and utility of the features previously found in such machines.

A more specific object of the invention is the provision of a three speed motor for driving the machine in which the speed and torque characteristics are such that slow speed opration is secured for all alphabetical printing Work, intermediate speed is secured for all numerical printing and a much higher speed is obtained during non-print operations. Provision is made for automatically changing the type oi operation in accordance with the character of the Work being performed. For instance, Where the machine is to alphabetically indicate (that is, print alphabetically only during the rst card cycle) and numerically list, slow speed operation will obtain during the first card cycle and the intermediate speed will obtain during subsequent card cycles. If the character of the work to be performed calls for alphabetical indicating and tabulating the machine Will operate at slow speed for the first card cycle and at high speed thereafter. Incidental to the foregoing; means are provided for securing a high starting torque in the motor when the same starts, this high starting torque being provided automatically and Without any attention or manipulationby the operator.

Other objects reside in the general simplification of the machine as a whole, the simplification or elimination of manual control devices heretofore employed, and in changes in the wiring of the machine to the general end that less skill is required of the operator of the machine.

It is a further object of the invention to extend the usefulness of machines of this type by providing an improved printing mechanism which may be called upon when occasion requires to print either numerals or alphabetical characters. An imprpved form of diiierential type controlling mechanism is provided and de- (CE. 235--92l signed to be controlled by a single card column which may select for printing either alphabetical or numerical characters arranged in groups, which characters are far in excess of the number of index points in' a card column.

Various other objects and advantages of our invention will be obvious from the following particular description of one form of mechanism embodying the invention or from an inspection of the accompanying drawings; and the invention -also constitutes certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

in the drawings:

Fig. l is a iront elevational view of the comy0 plete machine.

Fig. 2 is an end elevation looking from. the right in Fig. l, the section being taken alc' ig the lines 2-2 of Fig. l..

Fig. 3 is a section taken through the counter mechanism; the section being substantially along lines 3 3 of Fig. l.

Fig. 4 is a section taken on line 4-4 of Fig. l

`and shows the gearing to the emitters and control mechanism.

Fig. 5 is a section taken on line 5-5 of Figs. 1

and 8 showing the numerical type bar mechanism.

Fig. 6 is a section taken on line 6-6 of Figs. l.

and 8 showing the alphabetical type bar mecha- 85 Fig. 13 is a further detail of parts shown in Fig. 14 is a plan section of the printing section of the machine, the section being taken substantially along lines 14-14 of Fig. 1.

Fig. 15 is a detail of an alphabet zone selecting device..

Fig. 16 is a record card perforated with numerical and alphabetical data.

Fig. 1*'7 is atable showing the code arrangement employed in preparing the card in Fig. 16.

will be described later.

Fig. 17a is a detail of a'z'one selecting commutator structure. Fig. 18 is a central section of4 one of the accumulawrsf Fig. l19 is a detail of an emitter. Fig. 20 isan end view of the emitter of Fig. 19. Fig. 21 is a detail of inverting emitter. Fig. 22 is a cross sectional view of one of the dial switches.

Fig. 23 is a plan view of Fig. 22-. Fig. 24 is a detail of a contact control device. Figs. 25, 25a and 25h placed one above the other' form a complete wiring diagram of the electric circuits of the machine. In the following description, the terms counter and "accumulator are used interchangeably. The word counter as used will have the same meaning as accumulator and should be so understood.

Card ,feed section 'I'he machine Fig. 1 comprises a card feeding section generally designated 10, a printing unit 11, accumulating counters 12 and inverting counters 13.

Referring to Figs. 1 and '7 the tabulator motor TM by means of belt and pulley connection 14 drives a gear train 15 through a suitable one revolution card feed 'clutch (not shown) to reciprocate the oscillating link 16 of the card feed mechanism causing it to feed a card to the analyzing brushes for each machine cycle. 'Ihe pulley through another gear train 17 drives the listing lshaft 18 of the machine which in turn as will be later explained, drives the counter operating shafts.

The card feed section 10 is provided with the usual supply hopper 19 and receiving hopper 20 and the usual upper analyzing brushes UB and lower analyzing brushes LB shown diagrammatically on the wiring diagram Figs.:25a and 25h, are placed intermediate the hoppers to sense the perforations in the record cards as they pass from one to the other. The cards pass brushes UB and LB successively so thatthey are analyzed by brushes LB exactly one machine cycle after they are analyzed by the brushes UB.

. A card of the type analyzed by brushes UB and LB is shown in Fig. 16, the coding arrangement being as illustrated in Fig. 1'7. It will be noted that in the alphabetical section of the card the letters of the alphabet employ digit punching with an accompanying zone designation in the X and R index point positions. These two positions are analyzed by the upper brushes UB for controlling certain of the type elements as The upper brushes also analyze Account No." for controlling purposes in the usual manner for effecting group total printing and counter resetting operations.

The subtracting operation as carriedout by the machine is fully explained in the copending application of George F. Daly, Serial No. 499,279, filed December 1, 1930, in which the use of inverting counters is set forth so that the explanation of the subtracting operation and the construction of the counters in the present case will be confl-ned to the features which are essential to an understanding of the present invention, A subtracting tabulator as in such application is controlled from perforated records in which items to be subtracted, for instance debit and credit items,

' the card feed mechanism 10, printing mechanism -coded characters, are placed in hopper 19 and with the upper analyzing brushes to select one of two accumulators for entry of the items. Items from the other class of cards, for example, credit cards or those having no distinguishing perforation, may be entered into the other accumulator. This provides' for a summation of all debit items in one counter and all credit items in another counter. .During laccumulating and listing operations,

11, accumulating counters 12, and inverting coun- .ters 13 are driven byv tabulating motor TM: Cards, perforated torepresent'numerical data in the usual manner, and 'also alphabetically are fed one at a time through the analyzing devices of the machine. The upper and lower brushes cooperate to -automatically control the machine, keeping it in operation if certain classification data on successive cars agree and either stop the machine or effect total taking if the classification data change. As each card passes the lower brushes LB, the latter serve to close control circuits for each card perforation in the numerical data fields of the card which cause operation of the accumlating and printing mechanism to totalize and print the items represented upon the cards.

'Ihe present machine as previously explained may subtract by adding complements of nega- 135 tive items. Such items are picked from the cards by the upper analyzing brusles which effect a set up in the inverting counters which later enter the corresponding complements into the accumulating counters during the following machine cycle when the cards having caused the setup are passing the lower brushes.

Counter entering mechanism set of three counters and through a gear 23 on 120 such shaft to a similar gear on the other shaft (see also Fig. 3).

This arrangement is for convenience, toy reduce the longitudinal dimension of the tabulator. List shaft 18 through bevel gearing designated 125 '24 (Figs. 1 and 7) also drives a shaft 25 which in Fig. 4 drives counter shaft 26 of the inverters through spur gears 27.

'Ihe several counter elements are operated by magnetically controlled clutches in the usual manner which are energized from the analyzing brushes at differential times in accordance with perforations in the cards to enter and totalize items on the counter elements. The entering mechanism of these machines is Well known and fully described in the Patent No. 1,822,594 of C. D. Lake, issued September 8, 1931. It is illustrated in Figs. 3 and 18 and will be briefly described to aid in an understanding of the entering operation of the accumulators and inverters. 14o The counter elements are shown at 30 and may be driven by attached gears which mesh with gears 3 1 loosel on shaft 32. Sliding clutch elements are splined to shaft 32 so that they are driven therewith but may be slid into or out 1 5 of clutching engagement with gears 31. Each clutch element is provided with a circumferential groove into which projects one endof, a pivoted shift lever 33. The shafts 32 are driven during adding cycles from counter shafts 21 and 1 ;(1 

